Electronic cigarette



FIG. 1 is a perspective view of an electronic cigarette showing our new design;

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the figures show parts of the electronic cigarette which form no part of the claimed design. 

CLAIM The ornamental design for an electronic cigarette, as shown and described. 